enhanced 3d cursor. ''..blender redraws itself..''
Yes. When you want to hide the 3D cursor then i would suggest to use the custom Blender build from fjuhec where this is better implemented. https://blenderartists.org/forum/showthread.php?370568-Custom-Build-Blender-pigeon-v2-78a-%28October-27th%29&amp;highlight=custom+blender+build